Munster have confirmed that an academy player from the wider training squad has tested positive for coronavirus.
The player has been self-isolating since Monday, the province added, and that contact tracing has begun, with three academy players and a senior Munster player also self-isolating after being identified as potential close contacts.
"The health and safety of our players and staff continues to be our priority as we take every precaution to ensure a safe training and playing environment," said Munster Rugby Head of Medical, Dr Jamie Kearns.
"The individual is being monitored medically and remains well."
In a statement, the province added: "Munster Rugby have been assisting an Academy player within the wider training squad who has tested positive for Covid-19.
"The individual, who has been self-isolating since Monday, has not been in the High Performance Centre this week.
"The HSE have been contacted and the contact tracing process has commenced.
"In taking all precautionary measures Munster Rugby have immediately identified three academy players and one senior player as potential close contacts and they have already commenced self-isolating.
"The province will await further guidance from the HSE in this regard.
"The latest phase of the IRFU's routine PCR testing produced zero positive results ahead of this weekend’s 'A’ game against Connacht."